RKI Instruments Gas Tracer - Manual (Page 135)

Gas Tracer Operator’s Manual Using Maintenance Mode • 127
Calibration cylinders that contain only one target gas may also be
used for single calibration. For channels other than oxygen, RKI
Instruments, Inc. recommends that you use a cylinder that contains a
concentration of 10-50% of the full scale value of the target gas. For
example, if you are calibrating the combustible gas channel, your
calibration cylinder should have a combustible gas concentration
between 10% LEL and 50% LEL. For the oxygen channel, RKI
Instruments, Inc. recommends using 100% nitrogen to perform the
adjustment but any concentration between 0% oxygen (100%
nitrogen) and 17% oxygen can be used to make the adjustment.
NOTE: If your combustible gas channel is calibrated to a gas other
than methane, use an appropriate gas cylinder to perform the
calibration.
1. Perform a fresh air adjust. See “Performing a Fresh Air
Adjustment” on page 122 for instructions.
2. Install the demand flow regulator onto the calibration cylinder.
3. Connect the sample tubing to the demand flow regulator.
4. Install the hose and probe to the Gas Tracer.
5. Use the AIR▲ or (SHIFT) ▼ buttons to scroll to the ONE CAL
menu option.
6. Press and release the POWER ENTER button to display the single
calibration menu. The %LEL sensor will be displayed first.
7. Use the AIR▲ or (SHIFT)▼ button to display the channel you want
MAINTENANCE
ONE CAL
- - -
%LEL
MAINTENANCE
CH
4
ONE CAL